Wrench



Patented May 13, 1924.

UNITED STATES PATENT OFFI(IE.

MARTIN MANNION, 0F PERTH AMBOY, NEW JERSEY, AND ROBERT C. ARTHUR, 0FTOTTENVILLE, STATEN ISLAND, NEW YORK.

WRENCH.

Application filed November 29, 1921.

To all whom it may concern:

Be it known that MARTIN MANNION and ROBERT C. ARTHUR, citizens of theUnited States, residing at 295 Neville Street, Perth Amboy, MiddlesexCounty, State of New Jersey, and 547 7 Arthur Kill Road, Tottenville,Staten Island, county of Richmond, State of New York, respectively, haveinvented certain new and useful Improvements in Wrenches, of which thefollowing is a specification.

This invention relates to wrenches. It is designed for the removal ofthreaded tubes, such as ferrules, nipples or pipe or of threadedprojections or dowels from the female threads.

The object is to supply a wrench which will enable an operator to removea threaded ferrule which may or may not have been partly broken off, orto remove projections which have one end screwed into a ferrule threadand are usually countersunk, or the removal of parts of a screw whichremains in a shaft coupling but the head thereof has been chipped orbroken off.

The invention, therefore, consists of the improved construction andcombination of parts as hereinafter more fully described and claimed andas shown in the accompanying drawing illustrative of the preferredembodiment of our invention, reserving the right to make such changes asfairly fall within the scope of our invention.

Referring to the drawings:

.Fig. 1 shows a longitudinal view of our invention in which a malewrench is about to be forced into a ferrule d in a tube sheet in orderto remove the ferrule.

Fig. 2 is a central cross-section of Fig. 1 with the ferrule a andcondenser head A. removed.

In the drawings:

A is the wrench which has a radiating outer surface, as shown in Fig. 2,and internal radiating cutters or blades A This form of wrench issuitably fastened to a handle B with a screw 6.

The handle B has two transverse holes, I), 6" preferably about at rightangles to each other to receive an operating bar, not shown, forunscrewing a ferrule, etc., when the teeth have sharply cut into orupset the inner surface of the ferrule.

In Fig. 2 the wrench and its handle are shown in section. The wrench maybe se- Seria1-No. 518,583.

be serrated or roughened as to enable it to take hold of the element tobe removed, provided the wrench, when driven upon said element, can beunscrewed.

Our wrench can be used to remove the male thread of a nipple thread orpipe from the female thread, and, while it is desired and capable of useunder various conditions, it is especially adapted for removing aferrule when the exposed threads have been broken or twisted oif.

The wrench is also adapted for use for removing a plug when its shoulderhas been broken off. The wrench and its handle and operating bar areeach made of suitable metal.

The wrench is removable from the handle and is interchangeable withwrenches of different sizes and different bevels.

The wrench is driven with more or less force upon the element to beremoved in order to secure the necessary rigid connection.

It is obvious that the wrench may be made of different lengths in orderto make one wrench adapted for use on members of varying diameters.

We claim:

1. A wrench comprising a fixed conical portion having an externalfrictional surface for driving engagement with an object to be grippedand adapted to rotate said object, and a handle affixed thereto and inrelatively non-rotatable relation therewith.

2. A wrench comprising a fixed conical portion having external grippingserrations for driving engagement with an object to be gripped andadapted to rotate said object and a handle secured to said conicalportion in relatively fixed non-rotatable relation therewith.

3. A wrench comprising a fixed conical portion having an externalgripping surface for driving engagement with an object to be gripped anda handle inserted therein and in relatively non-rotatable relationthere- With.

4. A Wrench comprising a fixed conical portion having external grippingteeth for driving engagement with an object to be gripped and adapted torotate said object, ahandle inserted in said conical portion inrelatively non-rotatable relation therewith and means for removablysecuring said handle to said conical portion.

5. A Wrench comprising a fixed conical.

portion having an externally serrated frictional gripping surface fordriving engagement With an object to be gripped and adapted to rotatesaid object, a handle inserted in said conical portion in relativelynon-rotatable relation therewith, and means for removably securing saidhandle to said conical portion.

In testimony whereof they aflix their signatures.

MARTIN MANNION. ROBERT C. ARTHUR.

